Teensy Wireless

should be able to get better range than that. the chip is highly integrated. i was thinking of break-away programming board that would have the debug chip on it. then i could deploy multiple wireless boards around the house on cr2032 power.
Long-term, as in after the K66 board, I very likely may make a Teensy using one of those chips. I've been talking with NXP about future versions of that chip, but any info that's not yet on their website is covered by a NDA, so I really can't say anything more at this time.

In the nearer term, I'm hoping to see a shield (made by a third party, not PJRC) with one of the mature Nordic chips and Lipo battery management....